How to store temporary data at the client-side and then send it to the server

Question

I need to store data temporarily at the client-side to allow users to add, edit or delete items without having to query the server for each of these actions; just when the u

Answer 1

Sure, since it's a table it makes sense to have an array of objects. Note that an object is surrounded by curly braces and an array is surrounded by brackets:

var myArray = [];  // Initialize empty array
var myObject = {}; // Initialize empty object

This should accomplish what you need:

// Initialize variables
var newEntry, table = [];

// Create a new object
newEntry = {
  id: '',
  price: '',
  description: ''
};

// Add the object to the end of the array
table.push(newEntry);

Which is the same as this:

// Initialize array
var table = [];

// Create object and add the object to the end of the array
table.push({
  id: '22',
  price: '$222',
  description: 'Foo'
});

You can now access properties like this: table[0].id; // '22'

On modern browsers, if you want the data to persist across sessions (like cookies) you could use the sessionStorage or localStorage objects.

When you want to send the data to the server, you'll send a JSON version of the table across the wire:

var data = JSON.stringify(table);